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<div><span class="kw">theorem </span><a NAME="T1"><span class="comment"><font color="firebrick">:: JORDAN1B:1</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">f</font> being   <a href="finseq_1.html#NM1" title="FINSEQ_1:NM.1">FinSequence</a> holds <br/> ( <font color="Olive" title="b1">f</font> is  <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a>  iff  <a href="finseq_5.html#K3" title="FINSEQ_5:func.3">Rev</a> <font color="Olive" title="b1">f</font> is  <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a>  )</div></div>
